Definition of acidulate in English:

verb

Deeply flavored, with woody/mushroomy and spicy/peppery hints, it is slightly acidulated and nicely long on the palate.

The fishermen, many of Ukrainian descent, spit-roast or grill their catch over wood embers, or cook a Russian-Ukrainian fish soup called uha; in contrast to the Wallachian ciorb, this soup is not acidulated.

Always smell the fish before buying and, if in doubt, soak the skate wings in water acidulated with lemon juice for 30 minutes before cooking.